Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan bi cong snippets" » "phan bi cong snippets", "than bi cong snippets", "nhan biet cong snippets", "nhan bo cong snippets", "nhan tai cong snippets", "nhan thi cong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nhan bi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan bi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan bi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan bi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.